Siemens installs prototype of its 7-megawatt offshore wind turbine
• Upgraded wind turbine can produce electricity for up to 7,000
households • Built on Siemens' large direct drive platform with 10%
more energy • Utilizes proven technology and the supply chain of its
predecessor • Field tests with upgraded generator and enhanced
electrical system
May 19, 2015 + + + Only a few months after its sales launch at the EWEA Offshore trade
show in Copenhagen, the new Siemens offshore flagship wind turbine of the
type SWT-7.0-154 has now been installed as a prototype. The planned field
testing of the 7-megawatt (MW) offshore machine in Østerild, Denmark,
mainly focusses on the upgraded generator and the enhanced electrical
system. The majority of other components are equal to the proven
technology of the Siemens SWT-6.0-154 – including the rotor with its
outstanding diameter of 154 meters. This latest edition of the D7 product
platform can produce 32 million kilowatt hours of clean electricity under
offshore wind conditions, enough energy to supply up to 7,000 households.
In May 2011, Siemens installed the first prototype of its direct
drive offshore wind turbine, while in the meantime the direct drive wind
turbine has become the benchmark in the offshore wind industry. “The
installation of the 7-MW version is an exciting step in its further
development", says Morten Rasmussen, Head of Technology at Siemens Wind
Power and Renewables Division. “Based on the reliable technology and
supply chain of our six megawatt machine we have improved our flagship
wind turbine with stronger permanent magnets, optimized generator segments
and upgraded converter and transformer units. With only these minor
changes we expect to get it ready for serial production within only two
years.”
The gearless drive technology permits a compact design:
Using Siemens' Direct Drive technology the SWT-7.0-154 is the lightest
turbine of its class. The combination of robust design and low weight
reduces offshore infrastructure, installation and maintenance costs.
Today’s cranes and installation vessels will be sufficient for its
installation.
With the SWT-6.0-154 Siemens experienced a
tremendous success of its direct drive offshore technology. Gearless
Siemens turbines have been selected for around ten projects. The first of
them are already in operation. The new Siemens offshore machine will
strongly contribute to lowering the levelized cost for offshore
electricity: The SWT-7.0-154 model yields nearly 10 percent more power
than its predecessor at comparable operational costs. Due to the upgraded
electrical system it provides increased reactive power capabilities,
important for grid code compliance. Advanced technology based on a proven
platform will assure high reliability and maintainability.
Source: Bernd Eilitz,
www.siemens.com
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